| 1 | Colchester County High School for Girls Period 202425 | 100.0% | Grammar · Day · 6th | Colchester, East of England | Outstanding |
| 2 | Chelmsford County High School for Girls Period 202425 | 99.4% | Grammar · Day · 6th | Chelmsford, East of England | Outstanding |
| 3 | Southend High School for Girls Period 202425 | 98.9% | Grammar · Day · 6th | Southend-on-Sea, East of England | Outstanding |
| 4 | Westcliff High School for Girls Period 202425 | 97.3% | Grammar · Day · 6th | Westcliff-on-Sea, East of England | Outstanding |
| 5 | Watford Grammar School for Girls Period 202425 | 83.2% | Academy · Day · 6th | Watford, East of England | Outstanding |
| 6 | Brentwood Ursuline Convent High School Period 202425 | 77.8% | Academy · Day · 6th | Brentwood, East of England | Good |
| 7 | The Hertfordshire & Essex High School and Science College Period 202425 | 75.7% | Academy · Day · 6th | Bishop's Stortford, East of England | Outstanding |
| 8 | St Albans Girls' School Period 202425 | 69.7% | Academy · Day · 6th | St Albans, East of England | — |
| 9 | Presdales School Period 202425 | 69.5% | Academy · Day · 6th | Ware, East of England | Outstanding |
| 10 | Hitchin Girls' School Period 202425 | 68.8% | Academy · Day · 6th | Hitchin, East of England | — |
| 11 | Grays Convent High School Period 202425 | 61.3% | State · Day | Grays, East of England | — |
| 12 | St Bernard's High School Period 202425 | 59.3% | Academy · Day · 6th | Westcliff-on-Sea, East of England | — |
| 13 | Loreto College Period 202425 | 59.0% | Academy · Day · 6th | St Albans, East of England | — |
| 14 | Bishop's Hatfield Girls' School Period 202425 | 55.0% | Academy · Day · 6th | Hatfield, East of England | — |
| 15 | Challney High School for Girls Period 202425 | 47.6% | Academy · Day | Luton, East of England | Outstanding |